title: Methyl (3S,10b'S)-5-chloro-9'-fluoro-1-methyl-2-oxo-5'-phenyl-10b'H-spiro-[indoline-3,1'-pyrazolo-[3,2-a]iso-quinoline]-2'-carboxyl-ate.
abstract: In the title compound, C27H19ClFN3O3, the pyrazole ring has a twist conformation and the six-membered ring to which it is fused has a screw-boat conformation. The mean plane of the pyrazole ring is inclined to the 2-methyl-indoline ring by 85.03 (9) and by 28.17 (8)° to the mean plane of the iso-quinoline ring system. In the crystal, mol-ecules are linked by pairs of C-H⋯F hydrogen bonds, forming inversion dimers. These dimers are linked via C-H⋯O hydrogen bonds, forming a two-dimensional network lying parallel to (10-1).
authors.affiliation: Department of Physics, S.M.K. Fomra Institute of Technology, Thaiyur, Chennai 603 103, India.
authors.forename: Piskala Subburaman
authors.initials: PS
authors.lastname: Kannan
authors.forename: Panneerselvam
authors.initials: P
authors.lastname: Yuvaraj
authors.forename: Boreddy Siva Rami
authors.initials: BS
authors.lastname: Reddy
authors.forename: Rajamani
authors.initials: R
authors.lastname: Raja
authors.forename: Arunachalathevar
authors.initials: A
authors.lastname: Subbiahpandi